Which arch and shackle length for 62's?

[YoTRacer158]

I went to ORW yesterday and ordered everything except shocks for the rear LT. I went with the F67 (12.5" arch) deavers and 12" TC shackles, just making sure this was the best choice as I have until tomorrow to call them and change the arch or shackle length. The truck will have a cab and bed cage, but I won't always have a lot of weight in the rear so I'm wondering if the 12.5" arch is going to be too stiff for every day driving. The bedcage is going to be a simple design, with a removable section to hold the spare tires and all that stuff that I am only going to bolt in when I go the the desert. Basically the only parts of the bedcage that will be there at all times are:

-Tubes running horizontal from the c-pillar to the rear end of the frame, running just below top of the bedsides.
-Tubes comming from the top of the C-pillar comming down an angle to connect with the horizontal tubes about halfway down the bed.
-Some extra tubes for bracing comming from the horizontal tubes down to the frame.
-A tube running from one frame rail to the other at the rear of the frame to box it.
-And the tubing for the shock mounts running from one sode of the frame to the other.

Might be kind of hard to picture what I'm talking about, but I can post a picture of how I plan on building the cage if my internet at my house ever decides to work. I also plan on building a rear bumper with some good strength as well, that will be there at all times. I'm sure I will be running a fuel cell sometime in the future, but no plans for one as of now. Does it sound like I have enough weight back there for the 12.5" arch? I want the truck to sit as level as possible, or slightly front high (can't stand the stinkbug look). I'll be running 18" triple bypasses (when I can afford them) if it matters.

On another note, ORW definately has some great guys working there and saved me a couple hundred bucks on the setup.

[YoTRacer158]

just got all the measurements for the tubing and it looks like there will be about 50ft of permanent tubing for the bedcage...roughly 100lbs (this is not including the bumper...which will be another 50lbs maybe). The removable part of the cage will be another 50lbs at most as well, not including spare tires or anything else.

Rough sketch of the cage design can be seen here http://www.tacomaterritory.com/forum/showthread.php?p=546599#post546599

[Tweeter]

12.5" 62's and 9" Total Chaos shackles :neener:

Spring under = 10.5" arch.

[Tweeter]

Looks like you have the rest under control, I sent you a PM ;)

[YoTRacer158]

12.5" 62's and 9" Total Chaos shackles :neener:

Spring under = 10.5" arch.

9" above through or below the frame?

[Tweeter]

Through.

[Factor]

I think I'm having about 70ft of tubing put into my cage that includes a bumper which will be holding one of my spares. I got the 67 pack 12.5 arch and custom shackles (prob 9'') but who knows. I'll have to ask him that.

[YoTRacer158]

What do you have up front?

[str8xedge]

I'd run the F67 pack if I were you, especially if you're going to get a cell in the future. The leafs are going to sag quite a bit. I've lost about 3 1/2" of ride height or so over what the truck sat at when I first finished it.

[Factor]

What do you have up front?

Absolutley Nothing! :p

[Factor]

I'd run the F67 pack if I were you, especially if you're going to get a cell in the future. The leafs are going to sag quite a bit. I've lost about 3 1/2" of ride height or so over what the truck sat at when I first finished it.

Yes I concur. Damn 3.5 inches?! How high did it sit over stock when you got it.

[str8xedge]

I'm not sure how high it was over stock. It sat about an inch higher than the front (which I was happy with because I had around 10" of uptravel). Now I only have about 7" or so of up-travel. The truck is also a doublecab with a stout bed cage, 2 optimas, a 32 gallon cell and a 35" spare so I'm that had a lot to do with the sag.

These leafs have waayyy to much spring and not enough lift!!

[AllJumpStyle]

I'm not sure how high it was over stock. It sat about an inch higher than the front (which I was happy with because I had around 10" of uptravel). Now I only have about 7" or so of up-travel. The truck is also a doublecab with a stout bed cage, 2 optimas, a 32 gallon cell and a 35" spare so I'm that had a lot to do with the sag.

These leafs have waayyy to much spring and not enough lift!!
Sounds like enough up travel to me, maybe invest in some airbumps though. Prerunners aren't supposed to be lifted... :rolleyes:

[str8xedge]

Sounds like enough up travel to me, maybe invest in some airbumps though. Prerunners aren't supposed to be lifted... :rolleyes:


They are when you're leaf sprung. You need the up-travel.

[AllJumpStyle]

I'd say around 60/40, imo it's better to have a bit more downtravel.

[YoTRacer158]

Quick question for anyone running 12.5" arch and 9" shackles...at full droop, what distance is the top of your axle from the bottom of the frame? Please mention whether you're running your shackle under, through or above the frame.

[Kirkenhiemer]

I'm running sping under axle with shackle over frame and unstrapped it's about 18,19'' with the 9'' shackle, and 12.5 arch. If your going to get 17'' of travel you'll need to go through the frame, and bump it around 1'' from the frame.

[DezertTacoma]

You could also call Deaver direct and see what they recomend. Its hard to say which pack to get since every truck is different weight wise. Also keep in mind if after your install you find you need more/less lift, you can bring the pack to Deaver and they can rearch the spring for you. The most important thing is installing them right so they cycle correctly and all the mounts are where they should be.

Also, if you plan on really using and abusing your truck on in the desert, I would talk to Erik over at Deaver and ask him to rework your leafs. He does it to a lot of race trucks and prerunners, basically its taking leafs out and rearching the pack and it makes it softer and more progressive. 62" Deavers work great out of the box, but when I had him to his magic it got even better.

[YoTRacer158]

Alright, so how far forward is everyone moving the front hanger and how far back are you moving the rear shackle? Just measure flat against the spring from eye to centerpoint and move it the difference from the stock length right?

[Factor]

I'm too lazy to measure but this might give you an idea...

http://i27.photobucket.com/albums/c199/sdhurleyguy/DSCN1747.jpg

[Kirkenhiemer]

Yes, I moved my front hanger about 5.25'' foward thats about the difference from my stock leaf spring. and the rear shackle hanger was in the same location just on top of the frame. I'm only getting 14, 15'' of travel with that set up. My truck is also older and had the shorter leaf springs. I'm going to move my shackle to the center of the frame, and maybe slightly forward.

[YoTRacer158]

Hmm...well maybe we can use your truck to cycle it and find the best place to put it since you already have it on. Another question...There's the tube that you put through the frame to run the shackles through, and then the shackles run down to the leafsprings - the tube is way wider than the leafsprings so there's about an inch gap on each side between the leafspring and the shackle, should there have been some type of spacer to put in there? If I tightened it down as is the shackles would be tilted in like this \ / which definately isnt right.

Oh and we should have mounted those limit straps higher up on the frame...I've only got about 1/4 - 1/2" of up adjustment to compensate for stretching. Oh well though, probably better to buy new ones when they start stretching anyways.

[AllJumpStyle]

The TC shackles do look like \ /, check their site. And when mounting limit straps, mount them to account for the stretching initially. I think it's something like allow 1" of stretch for every 12" of limit strap.

[YoTRacer158]

Hmm ok I'll check the site. I was going to account for 10% stretch and limit at around 17" or so which would put me around 18-19" after stretch.

[AllJumpStyle]

http://www.chaosfab.com/ashackles_03.jpg

[Factor]

Yea mine aren't like that. They're straight.

[Kirkenhiemer]

Hmm...well maybe we can use your truck to cycle it and find the best place to put it since you already have it on. Another question...There's the tube that you put through the frame to run the shackles through, and then the shackles run down to the leafsprings - the tube is way wider than the leafsprings so there's about an inch gap on each side between the leafspring and the shackle, should there have been some type of spacer to put in there? If I tightened it down as is the shackles would be tilted in like this \ / which definately isnt right.

Oh and we should have mounted those limit straps higher up on the frame...I've only got about 1/4 - 1/2" of up adjustment to compensate for stretching. Oh well though, probably better to buy new ones when they start stretching anyways.

Your limit stap mount could be trimmed up if needed. My straps didn't stretch as much as I thought they would, I only needed a 1/4'' adjustment on mine.

[YoTRacer158]

Yeah I can cut a little bit off of that tube if I need to.

Chris, I took a look at the shackles and I had them bolted up wrong...put them back together and they're good.

[YoTRacer158]

Well 7 months later I'll be starting the rear LT within the hour with the help of rojodiablo. Decided on 12" shakles over the frame, and will be running 18" King smoothbodies. Keep an eye on my build thread for updates....I probably won't post in this one anymore.

[shorty2305]

i've been reading around and this thread seemed closest to what i was wanting to find. I am about to throw some deaver 62's on my truck, and wanted to see what you guys say about how to get the right ride height. The rear now is stock, and i'd like it to only sit about an inch or two higher if at all. What arch and shack length would best do this for me? and how exactly do i figure where to locate the shackle on the frame? Do i tack it in place and check the ride height? that seems a bit tedious. My mind is drawing a blank. any input would be appreciated. thanks.

[jermedic]

It depends on how much weight you have in the rear. If you are going to be running a fuel cell and duel spares get the f67 12.5 inch arch. If you are just going to have one spare I would say the f55 10.5 inch arch should work out. I am running the f67's with just one spare and a tool box and I sit about an inch higer in the rear than in the front. It is pretty level once I hit the gas.

As far as finding the mounting points, yes you have to tack everything up then cycle it with just the main spring. Be sure not to fully weld the spring perches until the end because you will have to set your pinion angle and you don't want to have to grind them off.

[shorty2305]

would the f55 with a 12 inch shackle over the frame set me about as high as i am sitting now? with just one spare in the back with the bed cage?

[jermedic]

Should be pretty close.